I have a friend who loved sushi and she ate it at least once a week, if not more. Her daughter was born in the bottom 1% of size, so they took a blood test and her blood was poisoned with mercury from how much fish she consumed. She went through months of chelation therapy to bring it down, but the fact that she had to go through that is a testament to how fucked up our water is and how much we are killing the environment and ourselves.